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+
+//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar
+//Example 11.1
+//OS=Windows 10
+////Scilab version Scilab 6.0.0-beta-2(64 bit)
+clc;
+clear;
+
+//given
+L=1.25e3;//length of the link in m
+delta_lamda=45;//change in wavelength in nanometers
+lamda=850;//perating wavelength of fibre in nanometer
+C=3e8;//velocity of light in m/s
+M=0.023;//value of material dispersion parameter
+
+u=L/C;
+v=delta_lamda/lamda;
+delta_t_mat=u*v*0.023;//dispersion delay when length is 1.25 km
+mprintf("The dispersion delay when length is 1.25 km=%.2f ns",delta_t_mat*1e9);